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118
11HHydrogen2
13141516172HeHelium
23LiLitium4BeBeryllium5BBor6CKarbon7NNitrogen8OOksygen9FFluor10NeNeon
311NaNatrium12MgMagnesium345678910111213AlAluminium14SiSilisium15PFosfor16SSvovel17ClKlor18ArArgon
419KKalium20CaKalsium21ScScandium22TiTitan23VVanadium24CrKrom25MnMangan26FeJern27CoKobolt28NiNikkel29CuKobber30ZnSink31GaGallium32GeGermanium33AsArsen34SeSelen35BrBrom36KrKrypton
537RbRubidium38SrStrontium39YYttrium40ZrZirkonium41NbNiob42MoMolybden43TcTechnetium44RuRuthenium45RhRhodium46PdPalladium47AgSølv48CdKadmium49InIndium50SnTinn51SbAntimon52TeTellur53IJod54XeXenon
655CsCesium56BaBarium57-71
La-Lu		72HfHafnium73TaTantal74WWolfram75ReRhenium76OsOsmium77IrIridium78PtPlatina79AuGull80HgKvikksølv81TlThallium82PbBly83BiVismut84PoPolonium85AtAstat86RnRadon
787FrFrancium88RaRadium89-103
Ac-Lr		104RfRutherfordium105DbDubnium106SgSeaborgium107BhBohrium108HsHassium109MtMeitnerium110DsDarmstadtium111RgRöntgenium112CnCopernicium113NhNihonium114FlFlerovium115McMoscovium116LvLivermorium117TsTennessine118OgOganesson
8119UueUnunennium120UbnUnbinilium121-126
Ubu-Ubh
57LaLantan58CeCerium59PrPraseodym60NdNeodym61PmPromethium62SmSamarium63EuEuropium64GdGadolinium65TbTerbium66DyDysprosium67HoHolmium68ErErbium69TmThulium70YbYtterbium71LuLutetium
89AcActinium90ThThorium91PaProtactinium92UUran93NpNeptunium94PuPlutonium95AmAmericium96CmCurium97BkBerkelium98CfCalifornium99EsEinsteinium100FmFermium101MdMendelevium102NoNobelium103LrLawrencium
121UbuUnbiunium122UbbUnbibium123UbtUnbitrium124UbqUnbiquadium125UbpUnbipentium126UbhUnbihexium127UbsUnbiseptium

Indikatorer

lakmus

Fargen av naturlig opprinnelse, en av de første og mest kjente syrebasen indikatorene

Syre
[H+] > [OH-] pH = 0
Nøytral
[H+] = [OH-] pH = 7
Alkaline
[OH-] > [H+] pH = 14